Mht Cet
Differential Equations
MHT CET 2020 16th October Evening Shift
MCQ+2 / -02020
The rate at which the metal cools in moving air is proportional to the difference of temperatures between the metal and air. If the air temperature is 290 K and the metal temperature drops from 370 K to 330 K in 10 min , then the time required to drop the temperature upto 295 K is